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funding: update funding workflow to adhere to BOLT-0002

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This commit updates the main single-funder funding workflow within the
fundingManager (initiated via the rpcserver or by a message from a
connected peer) to fully adhere to the funding protocol outlined in
BOLT-0002.

The major changes are as follows:
  * All messages modified to use the new funding messages in BOLT-0002.
  * The initiator of a funding workflow no longer decides how many
confirmations must elapse before the channel can be considered open.
  * Rather than each side specifying their desired CSV delay, both
sides now specify the CSV delay for the _other_ party.
This commit is contained in:
Olaoluwa Osuntokun 2017-07-30 15:53:53 -07:00
parent 216cc3f919
commit 07212588fc
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GPG key ID: 9CC5B105D03521A2
2 changed files with 350 additions and 227 deletions
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559
fundingmanager.go
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18
server.go
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@ -20,6 +20,7 @@ import (
"github.com/lightningnetwork/lnd/lnwire"
"github.com/lightningnetwork/lnd/routing"
"github.com/roasbeef/btcd/btcec"
"github.com/roasbeef/btcd/chaincfg/chainhash"
"github.com/roasbeef/btcd/connmgr"
"github.com/roasbeef/btcutil"
@ -952,22 +953,20 @@ type disconnectPeerMsg struct {
}
// openChanReq is a message sent to the server in order to request the
// initiation of a channel funding workflow to the peer with either the specified
// relative peer ID, or a global lightning ID.
// initiation of a channel funding workflow to the peer with either the
// specified relative peer ID, or a global lightning ID.
type openChanReq struct {
targetPeerID int32
targetPubkey *btcec.PublicKey
// TODO(roasbeef): make enums in lnwire
channelType uint8
coinType uint64
chainHash chainhash.Hash
localFundingAmt btcutil.Amount
remoteFundingAmt btcutil.Amount
pushAmt btcutil.Amount
numConfs uint32
// TODO(roasbeef): add ability to specify channel constraints as well
updates chan *lnrpc.OpenStatusUpdate
err chan error
@ -1247,10 +1246,9 @@ func (s *server) DisconnectPeer(pubKey *btcec.PublicKey) error {
}
// OpenChannel sends a request to the server to open a channel to the specified
// peer identified by ID with the passed channel funding paramters.
// peer identified by ID with the passed channel funding parameters.
func (s *server) OpenChannel(peerID int32, nodeKey *btcec.PublicKey,
localAmt, pushAmt btcutil.Amount,
numConfs uint32) (chan *lnrpc.OpenStatusUpdate, chan error) {
localAmt, pushAmt btcutil.Amount) (chan *lnrpc.OpenStatusUpdate, chan error) {
errChan := make(chan error, 1)
updateChan := make(chan *lnrpc.OpenStatusUpdate, 1)
@ -1258,9 +1256,9 @@ func (s *server) OpenChannel(peerID int32, nodeKey *btcec.PublicKey,
req := &openChanReq{
targetPeerID: peerID,
targetPubkey: nodeKey,
chainHash: *activeNetParams.GenesisHash,
localFundingAmt: localAmt,
pushAmt: pushAmt,
numConfs: numConfs,
updates: updateChan,
err: errChan,
}